It strikes me that questions of uniform and badges are very much a peacetime concern- I don't recollect anyone being too concerned when the bullets are flying
IIRC some of the great leaders and fighting men fought in very non-standard uniforms. R E Lee fought the whole of the US Civil War in a simple coat with Colonel's badges, Grant was notoriously "badly" if not "awfully" dressed, Wellington fought in civies and Montgomery in battle dress. Mussolini on the other hand.......
And that applies to the front-line as well - the last "well turned out" British unit that saw action was probably the Light Brigade under Cardigan - tho I don't think their uniforms had much impact on either their bravery or the result. There was even the fashion for "Zouaves" in the US Civil War, the Franco German War of 18970 and the First World War - but that normally lasted up to the point they met the enemy.