Not long.: Tetanus vaccines prevent lockjaw, a disease of horrible muscle spasms that is generally fatal. If you have already been properly vaccinated within the last 10 years, then you are probably protected unless the puncture wound is profoundly contaminated--prompting a need for a booster vaccine in 5 years. The symptoms of tetanus can occur as quickly as 3 days, although the average is 8 days.
army unit - a military unit that is part of an army. naval unit - a military unit that is part of a navy. air unit - a military unit that is part of the airforce. armour, armor - a military unit consisting of armored fighting vehicles. armed service, military service, service - a force that is a branch of the armed forces.
1 Battalion (Mil) An infantry command of two or more companies, which is the tactical unit of the infantry, or the smallest command which is self-supporting upon the battlefield, and also the unit in which the strength of the infantry of an army is expressed. 2  v. t Battalion To form into battalions.