assume a preparatory formation

розгорнутися в передбойовий порядок (‘My Early Life’ by Winston Churchill)

assume a defensive / assume the defensive

follow and assume / follow-and-assume

vee formation / V-Formation / V Formation

fingertip formation / finger-four formation / four finger formation

assume a formation

assume combat formation

preparatory fire

preparatory phase

preparatory route survey

assume a course

assume a position

assume an alarming character

assume an appointment

assume an irreversible character

assume an offensive posture

assume control

assume direction

assume duty

assume obligations

assume obligations under a treaty

assume office

assume responsibilities

assume risk

assume the command

assume the offensive

assume duties

assume the responsibility (for)

assume а defensive attitude

assume

assume the defense

approach march formation

attack formation