letter of agreement

dead letter-box

letter bomb (parcel bomb, mail bomb, postal bomb etc)

letter of instruction

letter order

letter of commendation

action letter

immediate action letter

call letter

speed letter

recruitment letter

command letter

circumstantial letter

commendatory letter

Mike (letter M in the phonetic alphabet)

Air Force letter

personnel news letter

letter of censure

arms control agreement

arms limitation agreement

breach of agreement

civil affairs agreement

collective-defense agreement

disarmament agreement

framework agreement

Memorandum of Agreement (MOA)

military-technical agreement

model agreement

multinational implementation agreement (MIA)

mutual support agreement (MSA)

NATO standardization agreement (STANAG)

peace agreement

security agreement (information security, NATO)