Prone movement A 'Mech lying prone at the beginning of its movement may declare walking or running movement, but may not jump. The 'Mech expends MP to attempt to stand. Though a prone 'Mech cannot crawl into another hex, it may expend running MPs, and change its facing in the hex it occupies at the standard cost of 1 MP per hexside while it still remains prone, attacker movement modifier is based on what type of movement mode the player selected.

Backward Movement During the course of its movement, a unit can move forward and backward (i.e. it can make both moves within the same Movement Phase) and change direction in any manner the player chooses, as long as the unit possesses the required number of MP. However, if a 'Mech or vehicle declares at the beginning of its turn that it will use running/flanking mode, it cannot move backward at any time during that turn.
Units moving backward may not change levels - this includes water hexes where a level change is required to enter the hex.
VTOL/WiGE Vehicles and submarines, or units expending VTOL or UMU MPs, may change elevations/depths while moving backwards.

Lateral Shift (four-legged 'mechs only) Four-legged 'Mechs may also move laterally, or sideways, without changing their facings. A quad 'Mech making a lateral shift moves into an adjacent hex that is not directly to its front or rear, while retaining its original facing.
A lateral shift costs 1 Movement Point in addition to the cost of moving into the target hex. A two-legged 'Mech can perform a similar action using facing changes for 1 MP more.
A backwards lateral shift—moving into hexes C or D in the diagram above—is considered backward movement.