Absolutely BVRAAM, every one who has fallen in war is the subject of Remembrance no matter their Colour, Creed, Race, sexual preference, whatever, and wreaths laid in their honour by individuals or associations are the traditional signifiers of that. They often bear the mottos of their associations or Service (like Be Prepared for the Scouts, many of whom died as such serving as messengers/runners). What they shouldn't bear is slogans (Join the Scouts, Act Now, etc). It's a War Memorial, not an advertising hoarding!