臨陣

just before the battle / to approach the front line

to face / to overlook / to arrive / to be (just) about to / just before

disposition of troops / wave / spate / burst / spell / short period of time / classifier for events or states of short duration

to shrink back as the time for battle approaches (idiom) / to get cold feet

see 臨陣退縮|临阵退缩[lin2 zhen4 tui4 suo1]