征 is built from the 彳 (step / going) and 正 components.
It reads セイ like 正, as do 政 and 整 — learn 正 once and the family's reading comes with it.
A common word using 征 is 征服 (せいふく), meaning “conquest, subjugation, overcoming”.
Kanji that look similar include 彼, 往, 径, and 役.
