撤

Left indexing radical 扌 (hand-variant of 手) - supplies the active sense. Withdrawing, removing, and clearing away are all hand actions. Distinguishes 撤 from its sister character 彻 (chè, thorough), which uses 彳 (step) instead - withdrawing-by-hand vs. going-all-the-way.

Middle component takes the 育 silhouette and serves as the sound-component for chè. Same phonetic family includes 彻 (thorough) and 澈 (clear water). The reading drifted historically; modern learners are best off treating this as a phonetic marker rather than analyzing the inner shape.

Right component 攵 (strike-variant of 攴) - adds the sense of forceful, deliberate action. Many action verbs carry 攵 on the right: 收 (collect), 改 (change), 救 (rescue), 教 (teach). Together with 扌 on the left, the character is doubly action-marked: hand pulls, action enforces.