Storage Compatibility Groups

Examples of these items are explosive switches or valves, and other ammunition items packaged to meet the criteria established for this group.
GROUP E - Group E items are ammunition that contains HE without its own means of initiation with a propulsive charge (other than one containing a flammable or hypergolic liquid). Examples of these items are artillery ammunition, rockets, and guided missiles. 
GROUP F - Group F items are articles containing a secondary detonating explosive substance with its means of initiation, with a propelling charge (other than one containing flammable liquid or hypergolic liquid) or without a propelling charge. Examples are items initiated by means of a button-firing device, grenades, sounding devices, and similar items that have an in-line explosive train in the initiator.
GROUP G - Group G items is fireworks, and illuminating, incendiary, smoke (including HC) or tear-producing munitions other than those munitions that are water activated or contain white phosphorus,  flammable liquid or gel. This group includes ammunition that, upon functioning, results in an incendiary, illumination, lachrymatory, smoke, or sound effect. Examples of these items are flares, signals, incendiary or illuminating ammunition, and other smoke or tear-producing devices. 
GROUP H - Group H items contains explosives and white phosphorus or other pyrophoric material. Ammunition in this group contains filler, which is spontaneously flammable when exposed to the atmosphere. Examples of these items are white phosphorus (WP), white phosphorus plasticized (PWP), or other ammunition containing pyrophoric material.