A DP is a point where second line transport (Logistics) delivers supplies and material to a unit first line transport (combat arms).
In battle conditions, this may occur at night at a pre-arranged map grid reference and specific time.
Commodities are exchanged quickly to avoid presenting a target for the enemy.
Generally, the user unit provides some armed protection for the DP vehicles while the exchange is occurring.
In emergency situations where time is critical, second line loaded vehicles may be exchanged for first line empty ones. Should a primary DP location come under attack, an alternate DP location is always identified.