PLEASE HELP What form or rule is demonstrated in this sentence?

The plan was this: divide the troops, surround the enemy, and capture the headquarters.

colon used to divide two clauses
commas between adjectives preceding a noun
colon used before a list of items

Colon used before a list of terms.

Explanation:

It goes on to list the steps in the plan.

yes they most likly are and have planed t try to bring human life and supplies there also(due to global warming and other harmful resorces)

1. both men a determined to break douglass.

2. douglass is still considered to be one of captain anthony's possessions.

3. douglass escapes to freedom in the north and changes his name.

4. the events are usually written from a distance in time.

5. the recording of events in chronological order.