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.
salient - (military) the part of the line of battle that projects closest to the enemy armed forces, armed services, military, military machine, war machine - the military forces of a nation; their military is the largest in the region; the military machine is the same one we faced in 1991 but now it is weaker