Date: July 25, 2020 09:44PM
Yes, it's a thing:https://www.gotquestions.org/Christian-flag.html
Excerpt from blurb:
"We can interpret the colors and symbols of the Christian flag as follows: the field is white, representing peace, purity, and holiness. The blue canton is emblematic of loyalty and truth (and possibly of heaven or the waters of baptism). The cross in the center of the blue canton is, of course, a symbol of Christ and His work of salvation; the cross is red, typical of Christ’s shed blood. Taken together, the symbols of the Christian flag portray the basics of the faith: Jesus Christ, the Holy One, died on the cross to grant us salvation, and we serve Him in fidelity and holiness, as He is faithful to us.
"A salute to the Christian flag may be accompanied by a pledge:
“I pledge allegiance to the Christian flag and to the Savior for whose kingdom it stands, one Savior, crucified, risen, and coming again with life and liberty for all who believe.”
"Some use a theologically liberal version of the pledge, which plays down the gospel element and emphasizes ecumenism:
“I pledge allegiance to the Christian flag and to the Savior for whose kingdom it stands, one brotherhood, uniting all mankind, in service and love.”
Disclosure: I've never heard of this before.
And after my trips through JWs and LDS I'm allergic to making pledges. :)