The word "requisition" is not used in the Militia Law of Louisiana. The Commander-in-Chief may, whenever, he is of opinion the public safety requires it, order out any portion of the State troops, and require them to perform any service or duty necessary for the public security; and troops called for "active" service (paid service) shall be furnished with the necessary ammunition, equipage and quarters.

In the State of Louisiana, the mayors of towns may demand a detachment of militia in case of "conflagration, or other public exigency," to preserve order and protect property.

I believe Lewis was speaking of a more expanded role....

[GOVERNOR MOORE'S PROCLAMATION.

Headquarters Louisiana Militia.
New-Orleans, February 14, 1862.

The President of the Confederate States having made a requisition upon me to "furnish from the State of Louisiana five and a half regiments of troops for the war" therefore I, Thomas 0. Moore, Governor of the State of Louisiana, do hereby proclaim that volunteers will be received in accordance with the President's proclamation....]

Militia requisitions--- means there is usually money involved.

General Lovell didn't call for the militia of New Orleans under Lewis until the Union fleet was five miles away on April 24th. He called for 1,000 men, and only 140, under Captain Dupiere, showed up.

O.R. Series 1 - Volume 6, Page 568

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David Upton