Here is a possible Civilopedia entry for this unit if anyone wants it
#PRTO_Infantryman
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^[Infantrymen] are powerful defenders.
#DESC_PRTO_Infantryman
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^Military strategists, most notably Prince Maurice of Nassau, a great Dutch military teacher, developed drill - the preparation for war by prescribed movements and formations - to increase efficiency.
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^The invention of the bayonet in 1670 gave infantries little reason to keep pikemen, and infantry units employed muskets and bayonet exclusively from then on. The Bayonet is recognized by many as being
one of the decisive weapons of the 2nd millennium. In the 18th century when muskets were lighter and easier to load, bayonets were universally placed on the ends of the barrel and the importance of the pikemen diminished.
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^Smaller tactical groups of infantrymen facilitated quicker rate of group fire with minimal mutual interference. Lines dropped from 8 to 10 in the 17th century to 2 to 3 at the end of the 18th century.
With the advent of more modern infanry drills Infantry ceased to use a long line formation because it held the risk that enemy cavalry might attack the flanks or rear and "roll up the line". The hollow square was adopted because it could repulse a $LINK<cavalry=PRTO_Cavalry> attack from any direction. A formation of resolute advancing infantry, bayonets drawn, screaming their battle cries in the 18th century struck fear in the hearts of the enemy and often caused the opposing ranks to break and run.
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^The use of the bayonet waned with the advent of more accurate $LINK<rifled arms=PRTO_Rifleman> in the mid 19th century, which were able to pick off advancing infantry from a distance. The bayonet charge was all but eliminated with the appearance of $LINK<Infantry=PRTO_Infantry> with automatic weapons in the 20th century, although they were still issued to troops and were still used in battle (c.f. the Japanese in WW2). Bayonets, albeit much reduced in size from earlier models, remain a part of the Infantry's weaponry up to the present day.
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^The Infantryman unit is basically the Musketman equipped with Flintlock & Bayonet and drilled in Infantry procedures.