However, during the subsequent occupation Tikrit became the scene of a number of insurgent attacks against the occupation forces. It is commonly regarded as being the northern angle of the "Sunni Triangle" within which the insurgency was at its most intense. In June 2003, Abid Hamid Mahmud, Saddam Hussein's Presidential Secretary and the Ace of Diamonds on the most wanted 'Deck of Cards,' was captured in a joint raid by special operations forces and the 1st Battalion, 22nd Infantry Regiment of 1st Brigade, 4th Infantry Division.