The rules that use the category "<speed>" are:

<speed_mod>

at <speed>

march rate <speed>

march rate is <speed>

speed <speed>

speed is <speed>

<assault_command>

<assault_command> at <speed>

<catch_up_speed_mod>

catch up <speed>

catch up is <speed>

catch up speed <speed>

catch up speed is <speed>

<speed_command>

<change_parameter> <speed_descriptor> by <speed>

slow down by <speed>

slow down to <speed>

speed up by <speed>

speed up to <speed>