Kuwait:
The 17,000-strong 3rd Infantry Division, which has routinely based some troops in Kuwait for much of the last decade, has now been deployed to the country.
The 15,000-strong 1st Marine Expeditionary Force opened up initial routes from Saudi Arabia into Kuwait in the 1991 Gulf War. It was ordered to move its headquarters to Kuwait last year and has now deployed there.
The announced deployments also include 26,000 British soldiers.
Key US command and communications staff have started to arrive at two major bases, Camp Doha and Camp Arifjan. The majority of ordinary troops are housed in a number of vast desert encampments – the Kabals – in the north of the country close to the Iraqi border.
Ali Al-Salem airforce base is an important staging point for US and British planes patrolling the skies of southern Iraq.