Lensatic
Guides · Commissioning

Preparing for Army OCS

Twelve weeks and three gates. Only one of them is a fitness test, and the one that surprises people is the water.

Twelve weeks, two phases

Officer Candidate School at Fort Benning runs twelve weeks in two phases. The first is the basic-course-like end — standards, drill, the reaction course, constant evaluation. The second is field-heavy and ends in an 18-day field mission, which is the part worth training for specifically.

The three gates

Do not meet the water for the first time there

The water survival test removes people who are otherwise perfectly fit, and it removes them for panic rather than for fitness. If you are not comfortable in a pool in uniform, that is a solvable problem and it is far cheaper to solve at a local pool over a few months than at Fort Benning in week three.

What to arrive with

EventWorkableComfortable
AFT two-mile run17:0013:30
Hand-release push-ups, 2 min3060
Plank2:003:20
12-mile ruck3:002:30
500-yard swim14:0010:00
The AFT is the published gate; the ruck and swim rows are readiness for the field phase and the water test, not OCS cutoffs.

Score your AFT before you do anything else — it is the only number here that is actually a requirement, and it tells you whether fitness is your problem.

AFT, the ruck, and the water

Lensatic trains all three: the AFT plan works the five events specifically, Road to 12 Miles builds load carriage for the field phase, and the eight-week swim programme paces off a 500-yard time trial so water confidence is built rather than hoped for.

See the plans AFT calculator

Questions

How long is Army OCS?

Twelve weeks at Fort Benning, in two phases.

What fitness test do I take?

The Army Fitness Test, all five events, no alternate events.

What is the Combat Water Survival Test?

A pass/fail water confidence assessment — equipment ditching and staying composed in the water in uniform, rather than a timed swim.

What is the hardest part?

Most candidates point at the 18-day field mission at the end of phase two, and at being evaluated continuously while short of sleep.

Is this official?

No. Preparation guidance published by Deadlift Digital LLC, not affiliated with or endorsed by the Army or the Department of Defense.

Related: Warrant Officer Candidate School · AFT calculator · building the ruck