4-220. Each state has RUF, which vary from state to state. National Guard commanders ensure that all Guardsmen train on them. While there are many similarities between the joint SRUF and state RUF, there are key differences between the two. Commanders should always consult their servicing staff judge advocate to determine the current RUF and their potential effect on operations. Each National Guardsman carries a RUF instruction card (see example in Figure 4-8, page 4-37), and small unit leaders review the rules before each mission.