Operation Compass. Libya. A column of Italian 20,000 troops, 160 tanks and 200 field guns is strung out along 7 miles of the coast road. They are contained by Combe Force’s roadblock at Sidi Saleh and 4th Armoured Brigade at Beda Fomm, despite a series of uncoordinated attacks all day. Australian 6th Division captures Benghazi while 7th Support Group (another part of 7th Armoured Division) captures Sceleidima inland; both groups now close the trap on the Italians from the North.
Battle of Keren, Eritrea, East Africa. 2nd Queen's Own Cameron Highlanders hold Cameron Ridge and are reinforced by Indian 6th Rajputana Rifles. Indian 3rd Battalion, 14th Punjab Regiment advances past them and onto Brig's Peak but they are pushed back by Italian 65th Infantry Division "Savoia Grenadiers" (Granatieri di Savoia).
German Motor Torpedo Boats S.30, S.54, S.58, S.59 raid the East coast of England, sinking British SS Angularity (2 crew killed, 1 taken prisoner by S.30).
At 5.52 PM 250 miles Northwest of Ireland, U-107 sinks Canadian SS Maplecourt carrying 3604 tons cargo including 1540 tons of steel from USA to Britain (all 37 hands lost).