(However, if the geological conditions are especially difficult or access is extremely limited, drilling can cost $30-$50 a foot or more.) For example, the sustainable Arizona homesteaders at ByExample.com report paying $6,750 to have well drilled 280' deep, or about $24/foot.
A second lieutenant (grade O-1) is usually promoted to first lieutenant (grade O-2) after 18 months in the Army or 24 months in the Air Force and Marine Corps.The difference between the two ranks is slight, primarily being experience and higher pay. second lieutenant (grade O-1) is usually promoted to first lieutenant (grade O-2) after 18 months in the Army or 24 months in the Air Force and Marine Corps.
I think the US scales down a level so they have a Captain running a company etc (they have more soldiers to command I guess)! The Company is commanded by a Major and in his company he has 3 Rifle Platoons of around 24 - 30 men each, commanded by a Lietuenant. The US still has 1st and 2nd Lieutenants, Australia did away with this years ago and only has 1st Lieutenants now.