The best replacement for red flag is false flag.

The best alternatives to red flag are rated as following:
★★★★★  false flag
★★★  false flage
★★★  red herring
★★  fake flag
★★  top gun
★  white flag

Your alternative for red flag is not listed? Suggest!
Speaking about red flag, one probably shouldn't forget about white cross.

Other search terms related to red flag and their ratings are:
★★★★★ white cross
★★ blue cross
★ union jack
You have in mind a companion for red flag and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of red flag in all years. Click on graph for more.
red flag
false flag
false flage