The 'rules' of BLO as I was taught by a master cabinet/furniture maker:
One coat a day for a week.
One coat a week for a month.
One coat a month for a year.
One coat a year for a lifetime.
Lightly 4/0 Steel Wool between coats, and rub with lint free cloth before applying the next coat, to remove any steel fibers...
Pretty sure that the military contractors did not do this, but simply dunked the entire stock in a barrel of BLO, and then hung them to dry...