1914 Arms and Flags of Great Britain and Her Colonies, Including Canada Providence Before Changes Made, Ensign, Narrow Pennant, Footnote Explanations
At the bottom of page is the following explaination for the footnote numbers that are printed at end of some description, for example the Union Jack.
#1 (UNION FLAG) The National Flag for use ashore. Flown on the jack staff of men-of-war and at the main by the admiral of the fleet. With certain insignia in the center used by diplomatic representatives ashore and afloat, and afloat by military authorities. With colonial badge in the center, used afloat by governors, high commissioner and officers administering the government.
#2 (WHITE ENSIGN FLAG) Flown by ships of war and by vessels of the Royal Yacht Squadron.
#3 (BLUE ENSIGN FLAG) Flown by vessels commanded by officers of Royal Naval Reserve and by hired vessels in surveying service. With colonial badge in fly, flown by vessels in the employment of British Colony. With other insignia in fly, flown by vessels in other public service. With royal arms in fly, flown afloat by consular officers. Flown also by several yacht clubs.
#4 (RED ENSIGN FLAG) Flown by British merchant ships and vessels not otherwise provided for. With imperial crown in fly flown by British custom house. Used by Trinity House with its jack in fly.
#5 (AUSTRALIAN COMMONWEALTH FLAG) In the merchant flag the field is red. The badges of the states are shown separately on this page.
#6 (NEW ZEALAND ARMS) The New Zealand flag is like that of Australia, the large white star being omitted and the five white stars replaced by four red stars. No circle appears.
#7 (CANADA ARMS) The badges of the provinces are shown in the last row on this page.
#8 (UNION OF SO. AFRICA ARMS) The arms are place in the fly. The circle does not appear.
Note-The circles on the Union Flag and ensigns merely mark the position to be taken by the badges, and do not appear on the flags proper.
Here is the last row showing the canadian provinces. Just click on it to enlarge them