How to talk about 1979 battlefield terms in the counterattack against Vietnam?

On the battlefield, they often use passwords.

Only when using the walkie-talkie, abbreviations or codes are used, which is the simplest alternative password to prevent the other party from eavesdropping.

For example, it was found that there was an enemy gathering 400 meters ahead and needed mortar support from the battalion battery.

The company commander will call through the intercom and generally say: XX (superior call sign), XX area (according to the grid map drawn before), rats (enemies, the number can be agreed), and some rain (shells).

After the artillery fire is covered, it will be corrected and then the loss results will be submitted.