LinkedList<Card> pot1 = new LinkedList<>();
LinkedList<Card> pot2 = new LinkedList<>();
pot1.addLast(p1);
pot2.addLast(p2);
for (int j = 0; j < 3; j++) {
    pot1.addLast(player1.removeFirst());
    pot2.addLast(player2.removeFirst());
}
while (player1.peekFirst().value == player2.peekFirst().value) {
    for (int j = 0; j < 4; j++) {
        pot1.addLast(player1.removeFirst());
        pot2.addLast(player2.removeFirst());
    }
}

if (player1.peekFirst().value > player2.peekFirst().value) {
    //System.err.println("Player 1 wins Battle with " + player1.peekFirst().value+">"+player2.peekFirst().value);
    for (int j = 0; j < pot1.size(); j++) {
        player1.addLast(pot1.removeFirst());
    }
    player1.addLast(player1.removeFirst());
    for (int j = 0; j < pot2.size(); j++) {
        player1.addLast(pot2.removeFirst());
    }
    player1.addLast(player2.removeFirst());
} else {
    //System.err.println("Player 2 wins Battle with " + player1.peekFirst().value+"<"+player2.peekFirst().value);
    for (int j = 0; j < pot1.size(); j++) {
        player2.addLast(pot1.removeFirst());
    }
    player2.addLast(player1.removeFirst());
    for (int j = 0; j < pot2.size(); j++) {
        player2.addLast(pot2.removeFirst());
    }
    player2.addLast(player2.removeFirst());
}