What factor is essential to consider when selecting a position for the M119A3?

When selecting a position for the M119A3, the factor of concealment and targeting angles is fundamental for effective operation. This artillery piece must be placed in a location that minimizes its visibility to the enemy while allowing for optimal angles of fire to effectively engage targets. Concealment helps protect the unit from enemy observation and potential counter-battery fire, which can be crucial in maintaining operational security and effectiveness. Targeting angles ensure that the cannon can achieve the desired range and fire trajectories, maximizing its engagement capabilities while minimizing exposure. Therefore, factoring in these elements is vital to ensure that artillery operations can be conducted successfully and safely.

While proximity to supply lines, terrain strength, and visibility of enemy movements are important considerations in a broader tactical context, they do not directly impact the immediate operational effectiveness of the M119A3 as the concealment and angles of engagement do.