I stand corrected on how quickly units complied with the 1768 Warrant. As in many things uniform, compliance varied.
Kemp in The British Army in the American Revolution writes: "Inspection returns show that for some considerable time after the 1768 Warrant many grenadier companies were without bearskin caps. It is more than likely that by the time the American War commenced the official bearskin cap was worn by most grenadiers."
Reid's King George's Army, vol. 3, indicates that the bearskin was unpopular and avoided at times, and notes a few units known to wear goatskin caps instead. Kemp indicates that by the 1770s some units wore painted linen cloths over the bearskin to protect the fur, which was known to fall out over time with wear.
Kemp gives an incomplete listing of unit clothing at certain dates.
3d, still wearing cloth mitre in 1770
23d Fusiliers, still wearing cloth mitre in 1770, mostly cocked hats thereafter
Kemp lists about 10 units as wearing fur but no date given.
He does, however provide some known dates by unit of adoption of bearskin:
5th,1768
6th, 1770
7th Fusiliers, 1770
12th, 1768
13th, 1768
14th, 1765 (before the warrant)
17th, 1769
25th, 1766 (before the warrant)
30th 1755 (before the warrant)
33d, 1766 (before the warrant)
43d, 1767 (before the warrant)
So I think it safe to say that many if not most regiments had the bearskin in their possession by the time of the AWI.
A more difficult question is, did they wear them in the field? We can imagine a host of circumstances that might lead to variations from unit to unit and at different points in time.
We know, for example, that the 5th Foot's grenadiers wore bearskins at Bunker Hill and throughout the campaigns of 1775-1777.John Peebles, a veteran grenadier of the Royal Highland Regiment in the AWI, records an example of the bearskin being worn in battle in his unit.
Spring's book With Zeal and with Bayonets Only, says bearskins were known to be used in action "occasionally." He then gives a fascinating example from the Battle of Brandywine in which the 1st Grenadier Battalion (a composite unit made up of grenadiers drawn from 13 different infantry regiments) were carrying their bearskins on their persons but not wearing them. When it came time for the unit to initiate a bayonet charge, however, the order was given to don the bearskins for their psychological impact on the rebels. Here is the quotation from an eyewitness that Spring cites on p. 116:
"It was here, before we attacked General Washington, that Colonel Medows made the famous speech to the 1st Battalion of Grenadiers, which he commanded: 'Grenadiers, put on your caps; for damned fighting and drinking I'll match you against the world."
This was a long-winded way around to saying that it is up to you whether you want your AWI minis to have bearskins, but you are certainly justified if you do.
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