Risqué,  perhaps you might want to read the Militia Acts of 1792,  the first of which authorizes the various States militias, and the second of which describes the weapons they should arm themselves with.  Passed one year after the Bill of Rights was ratified, the second Act requires infantry, cavalry and artillery for each State.  So Congress was planning on militia members having cannon.  And BTW,  the Afghan Taliban have lasted seventeen years against the US military.