You didn't specify where or what kind. There are memorials to everything almost everywhere (an educated guess might be well over 1 million memorials worldwide). For example the state of Utah has one for the Seagull; deservedly so (as they literally saved Utah from a disaster in the 1800s).
See: Vietnam Veterans Memorials
there are over 15 memorials and if you type D-Day memorials on googleimages you can find the graves of thousands of the brave soldiers that were killed on that liberation/invasion
one
Washington DC is a setting for hundreds of memorials and monuments. For more, use the link below.
Washington DC is a setting for hundreds of memorials and monuments. For more, use the link below.
Many memorials have the words' Lest We Forget' inscribed on them.
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People don't generally worship at war memorials. The memorials are used as a focus for remembering the dead and the horrors of war. The number of people who attend memorials varies greatly from country to country and memorial to memorial. It is impossible to put a figure on the number of people.
Washington,d.c.
In the 21st Century, nearly every US state has one, or one in planning.
20,000 british an dim not sure about the rest
3-4 in the u.s