Naval and Royal Marine ratings are trained in the use of flag signals at Portsmouth.
Full titles read: '"The Boys in Blue" - "Flagwagging"'. (new title) 'Almost as important as the teeth of a Battleship (guns) are the ears and eyes (Signallers). Here are some of "the boys in blue", training at Portsmouth - ".
L/S of numerous Naval and Royal Marine ratings standing on a parade ground, using semaphore and morse flags. Flags are raised and lowered on flagpoles; a man off-camera explains what they mean. M/S of ratings waving flags about furiously; the commentator gives more details. L/S of ratings being taught signals by marching about in pairs and obeying the signal orders given by flags rising up and down the poles behind them.