Military vehicle accessory systems and method

A military vehicle comprising:

• a frame;
• a tractive assembly coupled to the frame and comprising:
• a first axle assembly comprising a front tractive element;
• a first motor coupled to the front tractive element across a low speed gear ratio;
• a second axle assembly comprising a rear tractive element;
• and
• a second motor coupled to the rear tractive element across a high speed gear ratio;
• and
• a controller operably coupled to (i) the tractive assembly and (ii) a speed sensor operably coupled to one of the front tractive element and the rear tractive element and configured to detect a speed of the military vehicle, the controller configured to:
• compare the speed of the military vehicle to a maximum speed threshold;
• and
• shift the tractive assembly between an off-road drive mode and an on-road drive mode in response to the speed of the military vehicle exceeding the maximum speed threshold, wherein the tractive assembly is in the off-road drive mode when the speed of the military vehicle is below the maximum speed threshold and in the on-road drive mode when the speed of the military vehicle is above the maximum speed threshold;
• wherein the controller is configured to engage the first motor in the off-road drive mode and thereafter engage the second motor in the on-road drive mode such that the tractive assembly is configured to drive the military vehicle in one of the low speed gear ratio and the high speed gear ratio based on the speed of the military vehicle, and
• wherein both the first axle and the second axle are engaged when the speed of the military vehicle is at the maximum speed threshold, and wherein a second gear set of the high speed gear ratio slips when both the first axle and the second axle are engaged.