What is a significant disadvantage of 'recon by fire'?

The significant disadvantage of 'recon by fire' is the loss of surprise. This reconnaissance tactic involves firing at suspected enemy positions to provoke a reaction or to determine whether the area is occupied. While it can provide valuable intelligence, the act of firing essentially gives away the attacker's location and intentions, potentially alerting the enemy and allowing them to prepare for an engagement.

When surprise is lost, the adversary may be able to reposition forces or utilize cover more effectively, which diminishes the effectiveness of subsequent operations that rely on the element of surprise. Hence, while recon by fire can yield immediate information about enemy forces, the act of initiating fire undermines the strategic advantage that comes with keeping the enemy unaware of impending actions.