Break Step.

In the Australian military, a body of troops marches at 116 paces per minute, with each pace being 75cm.

Not 118 or 114 paces per minute.

116.

Not 80 or 70cm pace length.

75.

Left, right, left.

Unless they come upon a bridge they must cross.

Then the command will be given ‘Break … STEP!’

The troops will cease marching in step and each begins walking at whatever pace and length of step they choose.

Anarchy.

This prevents the rhythmic impact of synchronised footsteps, which could create vibrations that might compromise the structural integrity of the bridge.

Sometimes - to cross a bridge - you must break step with everyone else.