I am reposting WiskeySix's note on the use of Contact Reports -- good stuff, and underused in the BC2 servers at present.
What is a Contact Report?
A contact report is a standardized procedure for reporting [over radio] encounters with enemy forces. The standard is based on NATO SOP, and is optimized to minimize extraneous radio traffic - so everyone listening on the radio net quickly understands the nature and scope of the enemy threat.
Why have a Contact