Since EHV-1 is a common virus in horses, it is recommended that all horses be vaccinated at least once a year. For horses congregating at shows and competitions, more frequent vaccinations may be recommended.
Enfilade and defilade. Enfilade and defilade are concepts in military tactics used to describe a military formation's exposure to enemy fire. A formation or position is in enfilade if weapons fire can be directed along its longest axis.
Mobilization, in military terminology, is the act of assembling and readying troops and supplies for war. The word mobilization was first used, in a military context, to describe the preparation of the Russian army during the 1850s and 1860s. Mobilization theories and techniques have continuously changed since then. The opposite of mobilization is demobilization.