According to the Ministry of Defence:
“Under the cover of darkness Royal Marines carried out ambushes in the rainforests of Hawaiian paradise island Oahu during intensive jungle exercises with the US Marine Corps. Marines from 40 and 47 Commando have spent five weeks more than 7,000 miles from home operating in the Pacific island’s dense wilderness – patrolling, covertly carrying out reconnaissance missions and ambushing the ‘enemy’ as they refined and refreshed techniques for jungle warfare.”
Dolly_World 