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CSS

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HTML 

              
                - var cols = 3;
- var rows = 8;
main
	- for (var c = 0;c < cols;++c) {
		.column
			- for (var s = 0;s < rows;++s) {
				.soldier
					.torso
						.head
							.hat
							.visor
						.left-arm
							.musket
								.bayonet
								.butt
							.hand
						.right-arm
							.hand
						.wind-up-handle
						.left-leg
							.ankle
								.foot
						.right-leg
							.ankle
								.foot
			- }
	- }
!

CSS 

              
                $dur: 2.5s;
$rows: 8;

*, *:before, *:after {
	box-sizing: border-box;
	margin: 0;
	padding: 0;
}
:root {
	font-size: 10px;
}
body {
	background-color: #111;
}
main {
	background-color: #b8803b;
	display: flex;
	justify-content: center;
	align-items: center;
	height: 100vh;
	margin: auto;
	overflow: hidden;
	position: relative;
	perspective: 720px;
	white-space: nowrap;
	max-width: 720px;
}
.column {
	position: absolute;
	transform: translateZ(0);
}
@for $c from 1 through $rows {
	.column:nth-child(#{$c + 1}) {
		transform: translateZ(-21em * $c);
		z-index: -$c;
	}
}
.soldier {
	animation: march $dur ease-out infinite;
	display: inline-block;
	position: relative;
	width: 15em;
	height: 21em;
	transform: translate(-50%);
	will-change: transform;
	z-index: 0;
}
.soldier div {
	position: absolute;
}
/* Uniform color */
.torso, .hat {
	background-color: #a02;
}
/* Skin */
.head, .hand {
	background-color: #fdb;
}
/* Head */
.head {
	background-image: linear-gradient(85deg,transparent 55%,#fff 55%,#fff 65%,transparent 65%);
	border-radius: 50%;
	top: -2.6em;
	left: 0;
	width: 3em;
	height: 3em;
}
.hat {
	background-image: radial-gradient(1.5em 0.25em at 100% 65%,#fff 1.4em, transparent 1.5em);
	border-radius: 50% / 0.25em;
	bottom: 2em;
	height: 4.5em;
	width: 3em;
	z-index: 1;
}
.visor {
	background-color: #000;
	border-radius: 50%;
	top: 0.6em;
	left: 1.5em;
	height: 0.5em;
	width: 2.5em;
}
/* Torso */
.torso {
	background-image:
		radial-gradient(2.5em 1em at 50% 0,transparent 60%,#fff 60%,#fff 99%,transparent 99%),
		radial-gradient(6em 4em at 50% 0,transparent 85%,#fff 85%,#fff 99%,transparent 99%);
	border-radius: 2em 2em 0.4em 0.4em;
	top: 6em;
	left: 6em;
	width: 3em;
	height: 7em;
	transform-origin: 50% 6em;
}
.wind-up-handle {
	animation: unwind $dur linear infinite;
	background:
		radial-gradient(0.5em 0.5em at 0.5em 0.5em, transparent 39%,#ccc 40%,#ccc 98%,transparent 99%),
		radial-gradient(0.5em 0.5em at 0.5em 1.5em, transparent 39%,#ccc 40%,#ccc 98%,transparent 99%),
		linear-gradient(transparent 40%,#ccc 40%,#ccc 60%,transparent 60%) 0.2em 0 no-repeat;
	top: 50%;
	right: 100%;
	width: 1.5em;
	height: 2em;
}
/* Pivot points and animations for arms and legs */
.left-arm, .right-arm, .left-leg, .right-leg, .ankle {
	transform-origin: 1em 1em;
}
.right-arm, .left-leg, .right-leg, {
	animation: pivot $dur/2 ease-out infinite;
}
.left-arm, .left-leg {
	animation-delay: -$dur/4;
}
/* Arms */
.left-arm, .right-arm {
	background-color: #c24;
}
.left-arm {
	animation: rock $dur/2 ease-out infinite;
	background-image: linear-gradient(transparent 68%,#fff 68%);
	top: 2.75em;
	left: 1em;
	width: 2em;
	height: 3em;
	transform: rotate(-60deg);
	transform-origin: 50% 0;
	z-index: -1;
}
.right-arm {
	background-image: linear-gradient(transparent 84%,#fff 84%);
	border-radius: 1em 1em 0 0;
	top: 0.5em;
	left: 0.5em;
	width: 2em;
	height: 6em;
	z-index: 1;
}
/* Musket parts */
.musket, .butt {
	background-color: #222;
}
.musket {
	border-radius: 0.3em 0.3em 0 0;
	width: 0.7em;
	height: 11em;
	left: 2.5em;
	bottom: 0.5em;
}
.bayonet {
	box-shadow: -0.2em -0.4em 0 #333 inset;
	bottom: 95%;
	width: 1em;
	height: 4em;
}
.butt {
	background-color: #222;
	border-radius: 0.3em;
	right: 0;
	top: 9em;
	width: 1.1em;
	height: 3.5em;
}
/* Hand positions */
.hand {
	top: 100%;
}
.left-arm .hand {
	border-radius: 0.5em 1em 1em 1em;
	left: 25%;
	width: 2.5em;
	height: 1.5em;
}
.right-arm .hand {
	border-radius: 0.5em 0.5em 50% 50%;
	top: 100%;
	height: 2em;
	width: 2em;
}
/* Legs */
.left-leg, .right-leg, .ankle, .foot {
	background-color: #111;
}
.left-leg, .right-leg, .ankle {
	width: 2em;
	height: 5.5em;
}
.left-leg, .right-leg {
	border-radius: 1em;
	top: 6em;
	left: 0.5em;
}
.ankle {
	border-radius: 1em 1em 0 0;
	top: 3.5em;
}
.foot {
	border-radius: 1em 2em 1em 0.5em /  1.5em 1.5em 0.5em 0.5em;
	top: 4.5em;
	left: -0.3em;
	width: 3.5em;
	height: 1em;
}

@keyframes march {
	from {transform: translateX(-50%)}
	25% {transform: translateX(-25%)}
	50% {transform: translateX(0)}
	75% {transform: translateX(25%)}
	to {transform: translateX(50%)}
}
@keyframes pivot {
	from, to {transform: rotate(22deg)}
	50% {transform: rotate(-22deg)}
}
@keyframes rock {
	from, to {transform: rotate(-60deg)}
	50% {transform: rotate(-62deg)}
}
@keyframes unwind {
	from {transform: rotateX(0)}
	to {transform: rotateX(1turn)}
}

/* Hide some offscreen soldiers based on viewport for performance reason */
@media screen and (max-width: 500px) {
	.soldier:first-child, .soldier:last-child {
		visibility: hidden;
	}
}
@media screen and (max-width: 320px) {
	.soldier:nth-child(-n + 2), .soldier:nth-child(n + 7) {
		visibility: hidden;
	}
}
!

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