In tactical route search, what should be the commander's initial assessment based on?

The commander's initial assessment in tactical route search should be based on a ground assessment. This approach allows the commander to evaluate the current conditions of the route firsthand, considering factors such as terrain, visibility, and any potential signs of improvised explosive devices (IEDs) or other hazards. By focusing on the actual physical state of the ground, the commander can make informed decisions about the safety and viability of the route for troops and assets. This real-time assessment is crucial in adapting tactics to the immediate environment and ensuring the effectiveness of the mission while minimizing risks.

The other considerations, while important, do not provide the same immediate and relevant insights into the current operational environment. Standard protocol adherence ensures that established procedures are followed, but it doesn't replace the need for situational awareness derived from ground conditions. Previous day's events might offer context and historical understanding but can be outdated and may not reflect current threats. Casualty reports are critical for understanding the impact of previous operations, but they focus on outcomes rather than informing proactive measures based on the current state of the route. Therefore, a ground assessment is essential for establishing an effective and safe tactical approach.