The above diagram shows the way I was familiar with piecing the block. All that cutting and piecing to end up with a square? Just cut a square.
I found the above piecing method too. And this neat quilt made with that construction method. But, ew, templates.
If you look at the quilt as a whole and not at a single block, then you can see how alternating rows of squares and "other pieces" can be put together to form the Dugout block. Of course, this requires planning ahead and arranging the entire quilt before sewing. This is what floors are for.
The "other pieces" can easily be cut without a template too. Yeah, rotary cutter! I figured the sizes for the shapes by drawing out the block on graph paper, assuming a 2-inch finished center square, which is what I could cut from the jelly roll strips.
To cut the "other pieces," trim a 45-degree angle from one end of one strip.
I was able to cut four "other pieces" and four squares from each strip. Enough for two dugouts.