Twins John and Ambrose Clark find themselves aiding the patriots once again as they help work on a top-secret submarine that could end the war . and also look for a way to rescue their captured older brother. Based on the real Bushnell's Turtle, book two of the American Revolutionary War Adventures historical fiction series is a fun way for children to experience American history. After working as spies to aid the Colonies and delivering a message to General George Washington himself, twins Ambrose and John Clark find themselves volunteering for another mission to help the newly forming United States. This time, the boys step up to help transport much-needed gunpowder to the patriots, and end up in an even more dangerous situation--trying to man one of the first submarines. But the biggest challenge may be finding a way to free their imprisoned older brother. In addition to bringing to life America's war for independence, including information on the first submarine built in America, Submarines, Secrets, and a Daring Rescue: Teaches children about the Revolutionary War from a kid's perspective Is packed with historical information that is entertaining and educational Contains discussion questions, backgrounds on the real-life historical persons featured in the book, historical letters, and a glossary of key terms Can be used alongside school curriculum and as a homeschool resource American Revolutionary War Adventures: Are great for young readers ages 8-12 who like history Are a fictionalized stories from history inspired by real events and people Are perfect for back to school or summer reading challenges Make a great gift for Christmas, holidays, birthdays, or other gift-giving occasions.