to go all out even though its not necessary.
Yankees still going full battle rattle even though they stomping the Twins!
by nashoba October 11, 2009
1 more definition
To wear all of your combat gear, including IBA, Kevlar, FLC, elbow/knee pads, etc.
Man, don't expect to go out on a road march without going full battle rattle.
by hooah334 October 10, 2011