Translations in the defense industry: key to national security
Booths, clearances and NDAs — what working as an interpreter in the defence sector actually looks like

Language work in the defence sector is first and foremost interpreting: negotiations of defence contracts, equipment training, conferences and meetings in alliance formats. Written translation of classified documents complements it. Both come with the same precondition: the interpreter must hold a valid security clearance at the appropriate level. I have interpreted for the defence sector for 13 years — here is what the work looks like from the inside, and how to check whether an interpreter is authorised to do it.

What does a conference interpreter do at a defence conference?

The same as at any conference — under stricter rules. Simultaneous interpreting is done from a booth: two interpreters, switching roughly every 20–30 minutes, with participants on headsets. For negotiations and training sessions, consecutive interpreting is more common — the interpreter sits at the table or stands next to the equipment and renders statements segment by segment.

The difference starts before the event. The organiser will normally require a signed NDA before the interpreter sees any materials. Documents are sometimes made available only on site, with no copies allowed. Then there is the terminology: artillery, navy, air and missile defence, armoured forces, cyberspace — each of these fields has its own language in both Polish and English, and alliance formats add NATO nomenclature and abbreviations on top. An interpreter who confuses a missile with a rocket, or doesn't know the difference between a national and a NATO classification level, has no business in that booth.

Delegation visits and bilateral talks are a category of their own. Interpreting there is usually consecutive or whispered, and the interpreter is additionally expected to have a feel for protocol: speaking order, forms of address, what counts as an official statement and what is corridor conversation. Preparation for such meetings includes the political context too — in my case, the Foreign Policy Study Programme at the Polish Institute of International Affairs (PISM), completed alongside my interpreting degrees, does that work.

The scope of my assignments in this sector — from legal and technical negotiations to trainings — is described on my defence and military specialisation page.

What classification levels exist and what do they mean?

Poland's system of protecting classified information is based on the Act of 5 August 2010 on the Protection of Classified Information. Information is classified according to the damage its disclosure would cause — in ascending order: "zastrzeżone" (Restricted), "poufne" (Confidential) and "tajne" (Secret), with higher levels reserved for the most sensitive state information. Access at a given level requires a security clearance of at least that level, issued after a vetting procedure — conducted in Poland by the Internal Security Agency (ABW) or the Military Counterintelligence Service.

Alliance systems have their own, separate classifications and their own clearances: NATO (NATO RESTRICTED, NATO CONFIDENTIAL, NATO SECRET), the European Union (RESTREINT UE/EU RESTRICTED and above) and the European Space Agency. A Polish clearance does not automatically qualify you to work with NATO documents — a clearance in the relevant system is required. I hold clearances in all four systems: Polish (ABW), EU, NATO and ESA, at the Restricted, Confidential and Secret levels. I have also completed formal training in the protection of classified information.

Why do you need two cleared interpreters in the booth?

Two interpreters per booth is the standard in simultaneous interpreting — no one maintains quality beyond roughly half an hour of continuous work. In the defence sector this has an extra consequence: both interpreters hear the entire proceedings, so both must hold a clearance at the appropriate level. There is no way to slip an uncleared second interpreter into the booth, because from an information-security standpoint the interpreter has full access to everything said in the room.

For organisers, the practical conclusion is: book early. The pool of conference interpreters with valid clearances — NATO clearances especially — is small in Poland, and a vetting procedure cannot be fast-tracked for a single event.

How does preparation for a defence assignment work?

The sequence is always the same. First the NDA — I sign it before receiving any materials. Then the briefing: agenda, speaker list, presentations, reference documents, the parties' earlier arrangements. From these I build the assignment glossary: names of weapon systems, abbreviations, unit and rank nomenclature, legal terms for contract work. This stage determines the quality of the interpreting as much as the work in the booth itself.

If the materials are classified, I review them under the conditions set by the organiser — for instance on site only, with no copies made. This is a normal part of the job; build it into your preparation schedule.

And to pre-empt a frequent question: meetings with a classified element take place in person as a rule. Whether remote interpreting is admissible in a given format is decided by the organiser and their security unit — not by the interpreter. If you are planning a hybrid event, settle this question at the very start, because it shapes the entire interpreting logistics.

When do you need written translation of classified documents?

Written translation complements the interpreting: tender and bid documentation, intergovernmental agreements, technical specifications of military equipment, correspondence in alliance formats. Classified documents are handled under the rigours of the Act — in controlled conditions that prevent access by unauthorised persons, with access to the materials logged.

Some documents in defence procurement additionally require certified translation — I provide it as a sworn translator of English (registration No. TP/170/14 on the register of Poland's Ministry of Justice). Precision applies doubly here: an error in a technical specification or an offset agreement is not a linguistic slip but a real contractual risk.

How do you vet an interpreter for classified work?

Ask three questions. First: what clearances do you hold, at what level, and in which system (national, EU, NATO)? Second: who issued them, and are they valid? Third: what is your experience in defence specifically — not in interpreting in general, but in this field? An interpreter authorised for this work will answer all three precisely. Treat an evasive answer as a no.

I do not name clients in this sector — confidentiality of assignments is part of the same security culture that is expected of the interpreter. What I can describe are the types of meetings I cover: contract negotiations, technical trainings, conferences and delegation visits.

Organising an event, negotiation or training in the defence sector? Describe the format and the required access level, and enquire about availability.

Enquire about availability