“铁打的营盘流水的兵”,说的是常备军中兵员周期轮换更替的频繁性。如今看来,用它形容民兵和预备役部队兵员日渐增大的分散性和流动性,更是贴切不过。市场经济的迅速发展,社会经济活动的日趋活跃,似乎使空间变得越来越小。民兵和预备役部队官兵中,离土离乡跑买卖做手艺打零工者越来越多。他们走南闯北,甚至长年在外,在编而不在藉,在册而不在家。这种情况,给当前和今后的民兵工作提出了一个新的重要课题——如何加强兵员的动态管理? “The soldiers of the iron-clad camp” said that the frequent alternation of periodic rotation of the soldiers in the standing army. It now seems more apt to use it to describe the growing fragmentation and liquidity of militia and reserve force troops. The rapid development of a market economy and the increasingly active socio-economic activities seem to make the space smaller and smaller. Among the militia and reserve army officers and men, there are more and more handicraftsmen who are leaving their hometown to run and trade. They traveled southward, even for many years, in the books, not in the books, not in the books. This situation has raised a new important issue for the present and future militia work - how to strengthen the dynamic management of soldiers?