What can you trust Israeli propaganda or the real truth?
Unique among the main battle tanks of the world, the Merkava design features a front-mounted power pack, which presents a heavy mass in the forward area, which protects the crew from enemy attack. This configuration also cleared room at the rear section for a safe exit and enough space to carry a few fully armed infantrymen, in addition to the crew. The rear access hatch allows for the quick and safe exit of injured crewmen or pickup of wounded soldiers for evacuation.
Source here:
http://www.defense-update.com/directory/merkava4.htm