Photographs from 16th February 1941 and 1943 show the Royal Navy patrolling and the British Army training in the waterways in and around Northern Ireland.
On 16th February 1941, a photographer from the Belfast Telegraph newspaper photographed an unidentified Royal Navy corvette underway as part of a convoy escort.
On 16th February 1943, 72nd Independent Infantry Brigade trained in Co. Down using a raft of iron and waterproofing to cross Corbet Lough carrying vehicles.